Following publication of this article, a reader made a request for some of the strains employed in this study.
The PLOS ONE policy governing the sharing of Materials and data which applies to this article requires that authors agree to make freely available any materials and data described in their publication that may be reasonably requested for the purpose of academic, non-commercial research.
The journal evaluated the request and concluded that it falls within the requirements of the policy above. The journal has contacted the authors, who indicated that they are undertaking further experiments and are currently unable to share the reagents described in this article. However the authors have indicated that they are willing to share the strains once they have undertaken their experiments, which they estimate will be completed by June 2014.
